From: SASADA Koichi Date: 2012-05-03T07:32:37+09:00 Subject: [ruby-core:44815] Re: [ruby-trunk - Bug #6343][Open] Improved Fiber documentation Hi, We shouldn't mix Fiber#yield, Fiber.resume and Fiber.transfer. In other words, fiber1 shouldn't use Fiber#resume on the your example. I think it is a bug of current Ruby. -- // SASADA Koichi at atdot dot net